Validation of the phase difference method for atmospheric correction in GB-SAR. Issue 3 (2nd September 2022)

• Record Type: Journal Article
• Authors: Liu, Jie; Yang, Honglei; Cai, Jianwei; Zhao, Binbin; Peng, Junhuan; Gao, Zhouzheng; Yang, Wenfu
• Is Part Of: Journal of spatial science. Volume 67:Issue 3(2022)
• Page Start: 523
• Page End: 536
• Publication Date: 2022-09-02
• Subjects: GB-SAR -- atmospheric correction -- phase unwrapping; Geographic information systems -- Periodicals; Cartography -- Periodicals; Surveying -- Periodicals; Geodesy -- Periodicals; Photogrammetry -- Periodicals; Cartography; Geodesy; Geographic information systems; Photogrammetry; Surveying; Periodicals; 526.05
• DOI: 10.1080/14498596.2020.1843557
• Languages: English
• ISSNs: 1449-8596

Abstract

ABSTRACT: The phase difference method can compensate the atmospheric disturbance in GB-SAR interferometry without the process of phase unwrapping, but its accuracy and effectiveness have not been analysed. This paper, therefore, analyses and validates this method by a simulation experiment and two real data experiments. Furthermore, we establish a quadratic model of the phase difference method to deal with the large range observation. The results show that the phase difference method can avoid possible phase unwrapping error and achieve a compensation accuracy (<0.3 mm) that is consistent with that of the traditional method.